It’s a wretched yet predictable ritual after each new terrorist attack: Certain politicians and government officials waste no time exploiting the tragedy for their own ends. The remarks on Monday by John Brennan, the director of the Central Intelligence Agency, took that to a new and disgraceful low.

Speaking less than three days after coordinated terrorist attacks in Paris killed 129 and injured hundreds more, Mr. Brennan complained about “a lot of hand-wringing over the government’s role in the effort to try to uncover these terrorists.”